Adjustment Section: Pages 28 - 30

Adjustment Step 1

Adjust the UP and DOWN Limits

Do not make any limit adjustments until the safety reversing sensors are completely installed.

Limit adjustment settings regulate the points at which the door will stop when moving up or down.

The door will stop in the up direction if anything interferes with door travel. The door will reverse in

the down direction if anything interferes with the door travel (including binding or unbalanced doors).

To operate the opener, press the Door Control push button. Run the opener through a complete travel cycle.

•Does the door open and close completely?

•Does the door stay closed and not reverse unintentionally when fully closed?

If your door passes both of these tests, no limit adjustments are necessary unless the reversing test fails (See page 30).

Adjustment procedures are outlined below. Run the opener through a complete travel cycle after each adjustment.

Repeated operation of the opener during adjustment procedures may cause the motor to overheat and shut off. Simply wait 15 minutes and try again.

Read the procedures carefully before proceeding to Adjustment Step 2. Use a screwdriver to make limit adjustments.

Improper adjustment of the travel limits will

interfere with the proper operation of the

safety reverse system. The door might not

reverse properly when required and could seriously injure or kill someone under it. Test

the safety reverse system following all adjustments to the travel limits. See page 30.

Cover ,

Protection

Bolt

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Limit Adjustment

Screws

Adjustment Label

How and When to Adjust the Limits

,if the door does not open completely, but opens at least five feet:

Increase up travel. Turn the UP limit adjustment screw clockwise. One turn equals 2" of travel.

NOTE: To prevent the trolley from hitting the cover protection bolt, keep a minimum distance of 2-4" between the trolley and the bolt.

*if door does not open at least 5 feet:

Adjust the UP (open) force as explained in Adjustment Step 2.

,If the door does not close completely:

Increase down travel. Turn the DOWN limit adjustment screw counterclockwise. One turn equals 2" of travel.

If the door still won'tclose completely and the trolley bumps into the pulley bracket (see page 4 or 5), try lengthening the door arm (see page 26).

If you have adjusted the door arm to the maximum length and the door still will not close completely, lower the header bracket. See Installation Step 1, pages 12 and 13.

if the opener reverses in fully closed position: Decrease down travel. Turn the DOWN limit

adjustment screw clockwise. One turn equals 2" of travel.

,if the door reverses when closing and there is no visible interference to travel cycle:

If the opener lights are flashing, the Safety Reversing Sensors are either not installed, misaligned, or obstructed. See Troubleshooting, page 23.

Test the door for binding: Pull the manual release handle. Manually open and close the door. If the door is binding, call for garage door service. If the door is not binding or unbalanced, adjust the DOWN (close) force. See Adjustment Step 2.

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Sears 139.53535SRT1 operating instructions Adjustment Section Pages 28 Adjustment Step, Adjust the UP and Down Limits
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139.53535SRT1 specifications

The Sears 139.53535SRT1 is an innovative garage door opener that stands out in the realm of home automation due to its robust features and advanced technologies. This model offers a blend of convenience, security, and performance, making it a popular choice for homeowners seeking efficiency and reliability.

One of the standout features of the 139.53535SRT1 is its powerful motor, designed to lift heavy garage doors with ease. With a lifting capacity suitable for both standard and heavy-duty doors, it operates smoothly and quietly, ensuring minimal disruption in residential areas. The opener also includes safety features such as the automatic reverse function, which prevents accidents by reversing the door's direction if it detects an obstruction.

This model is equipped with the latest technology to enhance user experience and security. The security+ 2.0 technology generates a new code every time the remote is used. This feature provides an additional layer of protection against unauthorized access, ensuring homeowners feel safe and secure when using their garage door opener.

In terms of connectivity, the Sears 139.53535SRT1 comes with built-in Wi-Fi capability. This allows users to control the garage door remotely via a smartphone app. Through the app, users can check the status of their garage door, open or close it from anywhere, and receive notifications about its usage. This feature is particularly beneficial for those who may forget to close the door or need to grant access to someone while away from home.

Additionally, the model includes a convenient battery backup system. This ensures that the garage door opener operates even during power outages, providing peace of mind during inclement weather or disruptions in local power supply.

Installation of the 139.53535SRT1 is user-friendly, thanks to its comprehensive guide and compatibility with most standard garage door setups. Its sleek design also adds a modern touch to any garage space, blending functionality with aesthetics.

In summary, the Sears 139.53535SRT1 garage door opener encompasses a host of innovative features like a powerful motor, advanced security technology, Wi-Fi connectivity, and battery backup. These characteristics make it a top choice for homeowners aiming for both convenience and safety in their garage door solutions.
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